Changing current view to a view with tab bar

[mipegs]

Hi all!

I'm completely new to objective-c and iPhone development. Recently i've been developng server side stuff in java.
I have to say that apple's documentation on the topic is really good and strightforward but in my opinion it misses a simple example how to change view (using different controllers) from one to another by tapping a button...

I need to develop login view. After successful authentication user should be moved to a view with a tab bar. I have to say that i've stucked here. I've managed to change the view, but i don't know why the tab bar on a second view never gets populated with tab bar items. Of course i connected everything in IB.

Could anyone post an simple example with single button in first view that moves the user to a tabbed view? Or maybe there is an example that covers the topic?

Thanx for help.